2026-06-23T03:48:16Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/72222023-03-24T13:07:23Zcom_10259.4_2557com_10259_5086com_10259_2604col_10259_7221

Gubitosi, Giulia Ballesteros Castañeda, Ángel Herranz Zorrilla, Francisco José 2023-01-09T11:55:21Z 2023-01-09T11:55:21Z 2020-08 1824-8039 http://hdl.handle.net/10259/7222 10.22323/1.376.0190 Given a group of kinematical symmetry generators, one can construct a compatible noncommutative spacetime and deformed phase space by means of projective geometry. This was the main idea behind the very first model of noncommutative spacetime, proposed by H.S. Snyder in 1947. In this framework, spacetime coordinates are the translation generators over a manifold that is symmetric under the required generators, while momenta are projective coordinates on such a manifold. In these proceedings we review the construction of Euclidean and Lorentzian noncommutative Snyder spaces and investigate the freedom left by this construction in the choice of the physical momenta, because of different available choices of projective coordinates. In particular, we derive a quasi-canonical structure for both the Euclidean and Lorentzian Snyder noncommutative models such that their phase space algebra is diagonal although no longer quadratic. eng http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Generalized noncommutative Snyder spaces and projective geometry info:eu-repo/semantics/conferenceObject